1. After three use one of the two ground contacts disappeared into the device and there is rattling merrily around -> RISK OF SHORT CIRCUIT!
2. Is the unit connected to the lighter socket of the charger caused excessive noise on the radio, showing an extremely insufficient suppression and is actually the absolute cheap parts reserved.
Having eaten many different loader - including those trademark 3-4 - can I say this is such a strong disturbance genuinely rare already. It's not the entflohenem ground contact, but the design of the electronics. On the Info images of the product you can see the electronics with the ground contacts, these are firmly soldered, so they do not cancel, etc. , Are currently above the "cap" in the housing that are likely locked only in the opening. This is a faulty workmanship.
For the price, I had expected better quality but, also, the charger also provides so much "juice".
Clean the charging forth the part is good, my smartphone (2600mh) was quickly charged full despite ongoing navigation app. Well, shame, shame, shame. Have returned as defective, the part, and will order him not go back.